<template>
  <div id="app">
    <div>
      <span>姓名:</span>
      <input type="text" v-model="name" />
    </div>
    <div>
      <span>年龄:</span>
      <input type="number" v-model="age" />
    </div>
    <div>
      <span>性别:</span>
      <select v-model="gender">
        <option value="男">男</option>
        <option value="女">女</option>
      </select>
    </div>
    <div>
      <button @click="addalter">添加/修改</button>
    </div>
    <div>
      <table border="1" cellpadding="10" cellspacing="0">
        <tr>
          <th>序号</th>
          <th>姓名</th>
          <th>年龄</th>
          <th>性别</th>
          <th>操作</th>
        </tr>
        <tr v-for="(item, index) in list" :key="index">
          <td>{{ index + 1 }}</td>
          <td>{{ item.name }}</td>
          <td>{{ item.age }}</td>
          <td>{{ item.gender }}</td>
          <td>
            <button @click="delBtn(index)">删除</button>
            <button @click="editBtn(index)">编辑</button>
          </td>
        </tr>
      </table>
    </div>
  </div>
</template>
<script>
export default {
  data() {
    return {
      list: [
        {
          name: "Tom",
          age: 19,
          gender: "男",
        },
        {
          name: "Jone",
          age: 21,
          gender: "女",
        },
      ],
      str: false,
      name: "",
      age: "",
      gender: "",
      ind: 0,
    };
  },
  methods: {
    addalter() {
      if (!this.str) {
        if (
          this.name.trim() === "" ||
          this.name.length <= 1 ||
          this.name.length > 4 ||
          this.gender.trim() === ""
        ) {
          return alert("请输入合法的数据(名字的长度在2-4之间)");
        } else if (this.age.trim() === "" || this.age <= 0) {
          return alert("年龄不能小于1");
        } else {
          this.list.push({
            name: this.name,
            age: this.age,
            gender: this.gender,
          });
          this.name = "";
          this.age = "";
          this.gender = "";
        }
      } else {
        this.list.splice(this.ind, 1, {
          name: this.name,
          age: this.age,
          gender: this.gender,
        });
        this.name = "";
        this.age = "";
        this.gender = "";
      }
    },
    delBtn(inde) {
      return (this.list = this.list.filter((item, index) => index !== inde));
    },
    editBtn(index) {
      this.name = this.list[index].name;
      this.age = this.list[index].age;
      this.gender = this.list[index].gender;
      this.ind = index;
      this.str = true;
    },
  },
};
</script>
